2026 ICD-10-CM Diagnosis Code B37.0Candidal stomatitis

ICD-10-CM Codes›A00–B99›B35-B49›B37

ICD-10-CM B37.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B37.0 is a billable ICD-10-CM diagnosis code for candidal stomatitis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 157 through 159, 974 through 976. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Any dental condition including traumatic injury; Caries, periodontitis, and other preventable dental conditions; and Diseases of mouth; excluding dental.

Code Identity

ICD-10-CM Code
B37.0
Billable Status
Yes — Valid for Submission
Code Describes
Candidal stomatitis
Short Description
Candidal stomatitis
Same as the full description in the CMS dataset.
Parent Code
B37
Candidiasis

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB35-B49Mycoses
CategoryB37Candidiasis
This CodeB37.0Candidal stomatitis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute oral atrophic candidiasis
  • Acute oral pseudomembraneous candidiasis
  • Atrophic mucosa of digestive system organ
  • Atrophic thrush
  • Candidiasis of esophagus
  • Candidiasis of mouth
  • Candidiasis of mouth and esophagus
  • Candidiasis of mouth co-occurrent with human immunodeficiency virus infection
  • Candidiasis of mouth with AIDS
  • Candidiasis of oropharynx
  • Candidiasis of tongue
  • Chronic atrophic candidiasis
  • Chronic hyperplastic candidiasis
  • Chronic multifocal candidiasis of mouth
  • Chronic nodular oral candidiasis
  • Chronic plaque-like oral candidiasis
  • Chronic pseudomembranous oral candidiasis
  • Erythema of mucous membrane of mouth
  • Gastrointestinal candidiasis
  • Gingivitis caused by Candida
  • Hyperplastic thrush
  • Mucous membrane erythema
  • Oral erythematous candidiasis
  • Oral mucosal fungal disease
  • Pharyngeal candidiasis
  • Pseudomembranous thrush

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Oral thrush

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Aphthae, aphthous
      • thrush
    • Candidiasis, candidal
      • mouth
    • Candidiasis, candidal
      • oral
    • Candidiasis, candidal
      • stomatitis
    • Disease, diseased
      • parasitic
        • mouth
    • Disease, diseased
      • parasitic
        • tongue
    • Infection, infected, infective(opportunistic)
      • mouth, parasitic
    • Infection, infected, infective(opportunistic)
      • tongue NEC
        • parasitic
    • Infestation
      • mouth
    • Infestation
      • parasite, parasitic
        • mouth
    • Infestation
      • parasite, parasitic
        • tongue
    • Infestation
      • tongue
    • Muguet
    • Mycosis, mycotic
      • mouth
    • Mycosis, mycotic
      • stomatitis
    • Parasitic
      • stomatitis
    • Soor
    • Sprue(tropical)
      • meaning thrush
    • Stomatitis(denture) (ulcerative)
      • candidal
    • Stomatitis(denture) (ulcerative)
      • due to
        • thrush
    • Stomatitis(denture) (ulcerative)
      • monilial
    • Stomatitis(denture) (ulcerative)
      • mycotic
    • Stomatitis(denture) (ulcerative)
      • parasitic
    • Stomatomycosis
    • Thrush
      • oral
    • White
      • mouth

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DEN001
Any dental condition including traumatic injury
Default principal diagnosis: inpatient No · outpatient No
CCSR DEN003
Caries, periodontitis, and other preventable dental conditions
Default principal diagnosis: inpatient No · outpatient No
CCSR DIG003
Diseases of mouth; excluding dental
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR INF004
Fungal infections
Default principal diagnosis: inpatient No · outpatient No
CCSR DEN002
Nontraumatic dental conditions
Default principal diagnosis: inpatient No · outpatient No

Clinical InformationClinical

  • Chronic Mucocutaneous Candidiasis

    mucocutaneous candidiasis that is persistent or long-standing in nature.

Patient EducationClinical

Mouth Disorders

Your mouth is one of the most important parts of your body. It has many different functions. It allows you to:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert B37.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
112.0 Thrush
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B37.0Overview

Is B37.0 (Candidiasis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report candidal stomatitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B37.0 group to?

When candidal stomatitis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 157, 158, 159, 974, 975, 976, with relative weights from 0.7085 to 2.8860 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of B37.0?

Under the General Equivalence Mappings, candidal stomatitis converts to ICD-9-CM 112.0 (thrush). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.